19691399540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10909}}^1\times {\mathrm{5309}}^1$

素因数の和:16244

約数の個数: 48

約数和(自身を含む): 43796667600

約数和(自身を除く): 24105268060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 5309, 10618, 10909, 21236, 21818, 26545, 43636, 53090, 54545, 90253, 106180, 109090, 180506, 185453, 218180, 361012, 370906, 451265, 741812, 902530, 927265, 1805060, 1854530, 3709060, 57915881, 115831762, 231663524, 289579405, 579158810, 984569977, 1158317620, 1969139954, 3938279908, 4922849885, 9845699770, 19691399540]

約数ペア:

[(1, 19691399540), (2, 9845699770), (4, 4922849885), (5, 3938279908), (10, 1969139954), (17, 1158317620), (20, 984569977), (34, 579158810), (68, 289579405), (85, 231663524), (170, 115831762), (340, 57915881), (5309, 3709060), (10618, 1854530), (10909, 1805060), (21236, 927265), (21818, 902530), (26545, 741812), (43636, 451265), (53090, 370906), (54545, 361012), (90253, 218180), (106180, 185453), (109090, 180506)]